5 tips for processing zirconia

Fig. 1: Restoration made from SHT zirconia Zolid FX

1. Stick to the rules:

Adhere to the design parameters of the manufacturer in the CAD software and nesting process.

2. Check the instruments

Check the milling machine and milling instruments before milling – to guarantee a precise milling result.

3. Utilize the tips, documentation and media of the manufacturer

The application guide from Amann Girrbach for the Zolid DNA Zirconia materials regarding the customization or numerous tutorials on YouTube concerning the design, preparation, shading etc. provide highly useful tips & tricks.

4. Careful separation of restorations from the blank

Parallel instruments are best suited – preferably with a small diameter and which do not trim too aggressively. Separate the crown connectors applying only low pressure and circular movements. A soft support on the bench also prevents damage to the framework  if it falls on the bench when separating.

5. Carefully trim connectors

Cross-cut tungsten carbide cutters, diamond rotary or abrasive rubber instruments are suitable for trimming connectors on the restoration. I prefer cylindrical or disc-shaped, gray silicone rubber polishers for leveling and smoothing.